The Proportion Gauge has the T-bar tip on one end and an In-line tip on the opposite end. The T-bar tip is used on teeth with normal alignment and the In-line tip is used for crooked or crowded teeth where the horizontal arm of the T-bar is obstructed by the rotated teeth. The instrument is used to measure the width and length of maxillary anterior teeth. The tip measurements have a predetermined ratio of about 78% (based on the study results on the average width, length ratio of the maxillary anterior teeth.) The gauges assist the clinician in diagnosing any tooth size discrepancies that require attention to correct and enhance patient aesthetics.

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